Twist-on wire connector



FIG. 1 is a front perspective showing of the ornamental design for a twist-on wire connector of the present invention;

FIG. 2 is a front elevational showing of the ornamental design for a twist-on wire connector of FIG. 1.

FIG. 3 is a right side elevational showing of the ornamental design for a twist-on wire connector of FIG. 1.

FIG. 4 is a rear elevational showing of the ornamental design for a twist-on wire connector of FIG. 1.

FIG. 5 is a left side elevational showing of the ornamental design for a twist-on wire connector of FIG. 1.

FIG. 6 is a top elevational showing of the ornamental design for a twist-on wire connector of FIG. 1; and,

FIG. 7 is a bottom elevational showing of the ornamental design for a twist-on wire connector of FIG. 1. 

The ornamental design for a twist-on wire connector, substantially as shown and described. 